My manual says I have to replace the lamp after 1,000 hours. But I'm now up to 1,004 hours and the picture looks absolutely perfect. The manual says the projector will stop working after 1,100 hours of use. My question: If it's working fine, do I have to replace it? Is there any safety issue involved, or will it damage the unit to keep using it until it fails? If not, is there a way to reset the projector on this model so the "lamp usage'' warning will go off the screen? It's really annoying in the middle of my screen. Thanks.